.logo_box{
    width:100%;
    height:150px;
    display:flex;
    justify-content: center;
    align-items: center;
}

.logo_img{
    width:100px;
    height:78px;
    animation: tools_breath 1.5s infinite ease-in;
}

/* 动画 */
@keyframes tools_breath {
    from {
      /*box-shadow: 0 0 8px #29a1f7;*/
      transform: scale(1);
    }
  
    50% {
      /*box-shadow: 0 0 30px #29a1f7;*/
      transform: scale(1.1);
    }
  
    to {
      /*box-shadow: 0 0 8px #29a1f7;*/
      transform: scale(1);
    }
  }